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RE: Finding out IP address of external interface of web proxy
From: "Emilio Morla" <emilio.morla () grupositel com mx>
Date: Wed, 31 Oct 2007 09:55:15 -0600

Yes he can, he could use web pages like myipaddress.com, to discover the
external IP.
They could also use some ip tool like traceroute or similar to discover how
the packets travel the network and discover the actual IP of your proxy

Warm regards, 

Ing. Emilio Morla
Phone: +52 (55) 51333385
E-mail: emilio.morla () grupositel com mx

Grupo Sitel de México
Redes y Seguridad
En la inmensidad del tiempo y en la latitud del cosmos, mi dicha fue haber
compartido una época y un planeta con ustedes.
Carl Sagan

-----Mensaje original-----
De: listbounce () securityfocus com [mailto:listbounce () securityfocus com] En
nombre de Dev Null
Enviado el: Miércoles, 31 de Octubre de 2007 05:41 a.m.
Para: security-basics () securityfocus com
Asunto: Finding out IP address of external interface of web proxy

Hello All

How do I find out the IP address of the external interface of my web proxy?

To explain a bit further: A user browses web sitting in a LAN through the
web proxy that allows HTTP. The web proxy is connected to the LAN using one
interface and it is connected to the outer network using another interface.
Can the user find out the IP address of the outer interface? If yes, how?

Thanks in advance for any replies.


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